| Value | Category | Cases | |
|---|---|---|---|
| -97 | (Don't read) Refused to answer | 1 |
0.1%
|
| 1 | Not at all or less than one day | 178 |
22.3%
|
| 2 | Several days | 367 |
45.9%
|
| 3 | More than half a day to a day | 36 |
4.5%
|
| 4 | Nearly everyday | 218 |
27.3%
|